Double-Layer Intumescent Fire Seal – Enhanced Barrier for Critical Infrastructure Doors

Product Overview This advanced fire seal features dual intumescent layers to provide enhanced protection for critical environments like power stations, control centers, and defense facilities.

Features Two-stage expansion for extended sealing Increased fire resistance duration Designed for extreme environments Strong adhesive bond to most surfaces.

Technical Specifications Material: Dual-layer graphite formulation Activation Temp: 180°C–200°C Thickness: 5mm–10mm Width: Custom from 10mm–50mm Fire Rating: 120–180 minutes Certification: EN 1634-1, UL Listed.

Applications Data centers and server rooms Critical energy infrastructure Aerospace and defense facilities Secure government buildings.

Customization Options Multiple strip configurations Length and packaging formats Custom testing reports Special color requirements.

Shenzhen Xunzhi Building Materials Industrial Co., Ltd. is an integrated enterprise specializing in design, production, and sales, with many years of experience in manufacturing and technical product development. The company has two subsidiaries: Hong Kong Ruisong Technology Co., Ltd. and Sanya Ruisong Technology Co., Ltd. It is a professional manufacturer of door and window seals, curtain wall seals, and vehicle door sealing strips, providing one-stop rubber sealing solutions to global customers for many years.

We specialize in the production and processing of various sealing and molding products, including PVC (Polyvinyl Chloride), EPDM (Ethylene Propylene Diene Monomer), high-grade thermoplastic rubber (Santoprene), silicone rubber, dual-hardness sealing strips, rigid decorative strips, EVA single- and double-sided adhesive products for doors, windows, and curtain walls, as well as molded parts and plastic-rubber injection components.

The company is equipped with a strict quality assurance system, comprehensive testing procedures, and excellent after-sales service. Our products are highly recognized and praised by industry professionals, and are exported to Europe, America, Southeast Asia, and Hong Kong and Macao regions.